From the definition, the standard deviation of all pixels in the image measures how much variation or dispersion is from the mean.
A low standard deviation indicates that the data points tend to be very close to the mean,and hence high quality image formation is obtained with noise suppression (Young et al.,2007), on the other hand,high standard deviation in dictates that the data points are spread out over a large range of values,and hence weak image formation is obtained with the presence of noise.
From the definition, the standard deviation of all pixels in the image measures how much variation or dispersion is from the mean.A low standard deviation indicates that the data points tend to be very close to the mean,and hence high quality image formation is obtained with noise suppression (Young et al.,2007), on the other hand,high standard deviation in dictates that the data points are spread out over a large range of values,and hence weak image formation is obtained with the presence of noise.
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